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Buckling of elliptical hollow section members under combined compression and uniaxial bending
Abstract Experimental and numerical investigations into the behaviour of elliptical hollow section beam-columns under axial compression and uniaxial bending have been performed and described in this paper. A large-scale experimental programme, comprising a total of 10 tensile coupon tests and 24 beam-column tests, was carried out. The beam-column tests included 6 pure compression tests, 3 buckling about the major axis and 3 about the minor axis, and 18 eccentric compression tests, 9 inducing compression plus bending about the major axis and 9 inducing compression plus bending about the minor axis. All tested elliptical hollow sections were EHS 150×75×5, and three member lengths of 1m, 2m and 3m were considered. The test results have been supplemented by numerically generated results based on validated FE models to assess the influence of member slenderness and cross-sectional aspect ratio. On the basis of the experimental and numerical findings, design rules covering instabilities in hot-finished EHS beam-columns have been assessed and verified by statistical analysis. The limiting length concept has also been extended to EHS beam-columns.
Highlights Full scale experiments on EHS beam-column members. Nonlinear FE simulations of EHS beam-column members. Development of design guidance for EHS beam-column members. Reliability analysis of design rules. Extension of limiting length concept to EHS members under combined loading.
Buckling of elliptical hollow section members under combined compression and uniaxial bending
Abstract Experimental and numerical investigations into the behaviour of elliptical hollow section beam-columns under axial compression and uniaxial bending have been performed and described in this paper. A large-scale experimental programme, comprising a total of 10 tensile coupon tests and 24 beam-column tests, was carried out. The beam-column tests included 6 pure compression tests, 3 buckling about the major axis and 3 about the minor axis, and 18 eccentric compression tests, 9 inducing compression plus bending about the major axis and 9 inducing compression plus bending about the minor axis. All tested elliptical hollow sections were EHS 150×75×5, and three member lengths of 1m, 2m and 3m were considered. The test results have been supplemented by numerically generated results based on validated FE models to assess the influence of member slenderness and cross-sectional aspect ratio. On the basis of the experimental and numerical findings, design rules covering instabilities in hot-finished EHS beam-columns have been assessed and verified by statistical analysis. The limiting length concept has also been extended to EHS beam-columns.
Highlights Full scale experiments on EHS beam-column members. Nonlinear FE simulations of EHS beam-column members. Development of design guidance for EHS beam-column members. Reliability analysis of design rules. Extension of limiting length concept to EHS members under combined loading.
Buckling of elliptical hollow section members under combined compression and uniaxial bending
Law, K.H. (author) / Gardner, L. (author)
Journal of Constructional Steel Research ; 86 ; 1-16
2013-03-13
16 pages
Article (Journal)
Electronic Resource
English
Buckling of elliptical hollow section members under combined compression and uniaxial bending
| Online Contents | 2013